honestly, from the start I had the feeling that bareum is a psychopath but in the middle of the drama i kinda doubt it because there were a lot of scenes that showed yohan is thr psychopath. the acting of all the cast especially lee heejoon and lee seunggi was very good, they managed to convey the emotions of their characters very well. the plot execution until the end was quite neat and clear, even though at the end there was no story about what happened to mrs. choi but it's enough, no need for season 2 in my opinion.